Why are article numbers not included in the "Add chemical substances" and "Add circulated materials" tabs?

If you have noticed that article numbers are not loaded automatically in the "Add chemical substances" and "Add circulated materials" tabs, you can rest assured, it is exactly as it is supposed to be. 

The reason why article numbers are not automatically loaded in these particular tabs is so that it will be possible to add several substances or material to the same article - which is not possible if all would be inserted automatically since the cells would then be locked for editing. To add substances/materials to these tabs, you need to copy the article numbers that you want to add information to from the "Article identifier" tab and paste them into the article number column or enter them manually. After this, the article name belonging to the respective article number will be retrieved and automatically filled in in the column for article name.